Registration Dossier

Physical & Chemical properties

Melting point / freezing point

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The experimental melting point for anhydrous hydrogen bromide (HBr) is -88.5 ºC. The melting point for a solution of hydrobromic acid in water (69.2%) is -11.3 ºC. 

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-88.5 °C

Additional information

Garlanda, T., and Basilico, S. (1993) reported an experimental melting point for anhydrous HBr of -88.5 ºC. The melting point for a solution of hydrobmic acid in water (69.2%) is -11.3 ºC. This value is supported by O’Neil, M.J. (2001) which records the melting point of HBr as -86.9 ºC.